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Best Choice Quality Park 
Quality Park Interoffice Envelopes, String and Button, Brown Kraft, 10 x 13, 100 per Case, (63561) DURABLE: Made from heavyweight 28 lb. paper stockQuality Park 
Quality Park 2-Side Interoffice Envelopes, Redi-Tac Box-Style, Brown Kraft, 10 x 13, 100 per Box, (63666) REDI-TAC: Unique redi-tac closure is durable and convenientBest Value Sutter Signs 
Interoffice Envelopes with String, 10" x 13" String Tie Interdepartmental Envelopes, Sturdy 100gsm Paper (Pack of 100) SECURE STRING TIE CLOSURE | Designed for reliable internal delivery, these inter office envelopes with string feature aBlue Summit Supplies 
Blue Summit Inter-Department Envelopes, String Tie, Brown Kraft, 9 x 12 Inches – 100 Envelopes Durable construction from heavyweight 28 lb. paper stockLION 
Lion File-N-Send Poly Inter-Office Envelopes, 10 x 13 Inches, Opaque Charcoal Gray (Black), 6 EA/Pack, 1 Pack (22700-CG) 10" x 13"Quality Park 
Quality Park Interoffice Envelopes, Ungummed, Brown Kraft, 4.5 x 10.375, 500 per Box, (63262) DURABLE: Made from heavyweight 28 lb. paper stockMead 
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